Locking rosette



Aug. 14, 1928.

L. A. DEXTER LOCKING ROSET'IE Filed March 22, 1927 Patented Aug. 14, 1928.

LUCiEN A. DEXT'ii eon-sass, or time Rams, nicamm a C ainsaws as 'LDCKI-NG freeman.

Application filed March 22, "1927. Serial &; M23251.

This invention relates to .a locking rosette which may .be applied to the regular, door latch and which .is' very easily operable to lock an operating bar on which the knob used with such latch is' mounted against movement whenever it is desired, and quite as easily operable 'to unlock 'the same for operation. The rosette of my invention is one which is readily substituted to take the place of the ordinaryanjd well known stand ard rosette used so that it may be applied to door latches either ,when' 'the same are first installed or later. And the particular type-of door latch itself which is used is .not of importance with respect to the :locking rosette ofiny. invention as :such rosette is pract-icallyvuniversal in its application.-

The invention has for its object and pur-. pose the production =of a doc-king rosette 'ot the character stated capable of attaining the ends described. An understanding 'of the invention'inay bewhad from the following description taken in connection with the accompanying dra-wing, in which,

F 1 is a fragmentary".honizontal section at one edge of a .doorequiipped with at door latch and having the locking rosette of my invention applied thereto.

Fig. 2 is-an elevatibn or the locking rosette of my invention.

Fig. 3 is an elevation of the construction shown in Fig. 2 looking at the opposite side thereof, and

Fig. 4 is a perspective view of the mechanism which is located within the rosette to serve the locking functions stated.

Like reference characters refer to like parts in the different figures of the drawing.

In the construction shown, the door 1 of any conventional form has a mortice 2 made at its free vertical edge in which the latch housing 3 is received, that shown being of cylindrical form made of two half cylindrical parts, the ends of which are connected and held together by an inner cap 4 and an outer sleeve 5 through the end of which the latching bolt 6 normally projects. The latch illustrated is of a character previously patented by me, but the present invention is not necessarily limited in its use to any particular form or shape of door latch construction. It is enough that the latch bolt is operated so as to be retracted by means of an operating bar 7 which extends transversely through the door and through the hoizisin of. ,"tlie and is operatively 'associate with belt t3 so that til-lining the bar 7, 16t1t10t$. the bolt feiidpening the door. The great majority of door latches used in houses-,- building, and the like are operated by a bar like that shown at l7 squar in cross section and amendi g, thi ong-hgthe door, the projectingends of which carry 'door knobs 8 W;h-i= ch are iietachahly' .securedj-to; the ends o f -the -bazr (7 in an old and well known manner: :At each SldB of the ddor where the-bar 7 passes therethnotigh 1a iro'sette', usually of sheet metal; xis lodatd the :iirn'er end of the knob .zbein gseated in a shallow circular recess in said rrosette" and :the bar 7 assing therethrongh. The rosettes rcommon' y used are =of t-he ty';p indicated at 9 iii Fig'. 1 :at one sidegof the door; .When-iiny invention is installed on the amit lwil-l- :be installed only at one side; that is, the iinhe'r :side of the door; arid' :sh'owsfthe fOOEVG'rLtiOIIlIl type of fi'osette at 9 :at the outer side of the 6166i. Thiamosette of any iinvenitionshown at the side of the door opposite that at which the 'cofrventionail rfor'nltimrill ihated at 8 is located, has axshe'll thfiaaff sheet inetal ilentica'l in oonstnuetion with the mosette Q-Bicept that at opposite sides of its center it-"Is fom'netl with slots 11, the two slots lying in alignment. \Vithin the shell 10 and between it and the door the locking mechanism associated with the rosette is placed being covered and disguised by the shell 10. It comprises a plate of sheet metal formed at opposite sides with ears 12 with openings therethrough adapted to come into conjunction with the openings made in the shell 10 for the passage of screws to attach the same to the door. The ears 12 are connected by an integral cross member 13 in which a. circular opening 14 is made for the passage of the operating bar 7. The metal of this plate at each side of the cross bar 13 is pressed inwardly and offsetfrom the plane of the bar 13 to make two cross connecting bars 15 which, with the cross bar 13, provide a guide for the slidable mounting of a locking bar 16 of flat metal having a lip 17 turned outwardly at each end and adapted to pass through the slots 11 in the shell 10.

Between the ends of the locking bar 16 an opening of keyhole form is made. One end is of substantially circular form, as at 18,

and the other end of substantially rectangular form as indicated at 19. The bar 16 is slidable to two extreme positions in one of which the operating bar the circular portion. 18 andhis free to turn,

while at the other it is located through the rectangular portion 19 and is held against any turning movement.

It is evident that thetlocking bar 16 may be very readily moved to either of these positions. It is always moved by pushing against the proper lip 17, it never being-necessary to move the bar by-a pulling force upon'a lip 17. The loclrin bar 16 is very easily'operated. -The lips 1 are located so as to be immediately accessible by-the fingers of theonegrasping the door knob at the inner side of the door'. Hthe knob cannot be turned this is-evidence that the locking bar isin operative position and it 'is necessary only to push the bar 17 to its outer extreme position ofmovement. It-is quite easy-to move the bar to locking position:

It .is evident that the locking rosetbe which I have invented is readily substituted for the usual: rosette used. It occupies-thesame position and so far as outer form is concerned is identical with it. This permits installation of. the same very quickly and easily on the doors which are already-provided with door latches. The'construction is simple and inexpensive to make. 5 The parts are of sheet-metal and can-be produced in large quantity at low cost by suitable dies. -The construction has proveduvery practicali'and serviceable. v 1 v a The invention-is defined in the-appended claims and is to be. considered comprehen sive of all forms of structure comingwithin their scope. 1 I r r 1 passes through .I- claim;

-1."The combination with a door and door latch having a latch bolt and a rotatable shaft to actuate the latch bolt of a rosette adjacent one surface ofi'the door through which the rotatable shaft passes, means for attaching the rosette to the door, a locking bar located within said rosette associated with said rotatable;shaft and having an operating member extending outside of the rosette and means for slidably mounting said locking bar comprising a; member:-hav1n a guide through which said locking bar sli said-guide being attached to the rosette and having openings through which the-means for fastening the ro:ette to the door extend.

' 2. The-combination with adoor and-door latch-having a latch bolt and a frotata'ble. shaft to actuate the latch bolt'of a rosette through which said rotatable shaft passes attached to a surface of 'the door alocking bar located within the rosette and associated with the rotatable shaft a-nd having an oper-' ating memben extendino outside of the r0 sette and means forslidably mounting said lockingbar comprising 1 asheet metal memher having :a central opening through which the rotatable shaft passes said 1 sheet *metal member being slotted at twof rplac'es one on each side of'said 'centralopeningythe memher being bent so -that" the metal between said slots extends:on one =side of the'locking bar and the metal at the o utside' of eachslot extends on the other: side "of the lockingbar and means for-attaching saidimounting mem 5 her. within the' rosette. I V

In testimony whereof I afiixmy: signature. 

